Length of the third side of the right triangle third side is approximately? in

On a architect's drawing of a house, 1 inche representa 1.5

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons